Transmitting apparatus for use in wireless telegraphy and telephony.



G. MARCONI.

TRANSMITTING APPARATUS FOR USE IN WIRELESS TELEGRAPHY AND TELEPHONY.

APPLICATION FILED DEC. 3|, l9l3.

1,226,099. Patented May15,1917.

euenmmao museum, or LONDON, "lineman. assmuoa 'ro naac'our IR LESS TELE- Gr-Ara COMPANY JERSEY.

or AMERICA; or NEW Your, n. Y., A co summate new ramsmr'rme arraaa'rus FOIt USE IN WIRELESS TELEGRAPH? sun TELEPHONY.

To all whom it may concern:

Be it known that I, GUGLIELMO MARCONI; a s ubject'of the King of Italy, residing at Marconi House, Strand, "London, England,

have invented new and useful Improvements in Transmitting Apparatus for Use in Wireless Telegraphy and Telephony, of which the following is a specification.

This invention relates 'to"impr'oyements in transmitting apparatus for use in wireless telegraphy and telephony whereby continuous Oscillations or groups of continuous oscillations may be" generated.

The drawing is a' diagram illustrating the nvention. or, '0 c are condensers. c 1s connected 1n series with a source of current a. prfeferably continuous, a'key Z; and

andnductii e resistance 11. The condenser c is also connected in series with the 'conidenser-c and with an inductive. resistance "if d is a toothed disk discharger mounted "on ashaft e which can be rap1dly' rotated so as to cause the'teeth onthe disk almost 7 to bridge a gap in the circuit containing a? is. similarly connected in series iv'ith a third "condenser 0 an induc':

tive resistance? and a discharger d also fast on theshaft e and the condenser 0 is connected in Series with an inductive resistance and a dischar'ger (1 also test on the shaft "e. The dischargers are insulated from one another and are so'adjusted that the circuits 0' 'i'Ic-'*,- c? i 0 are completed and'broken in the above order and at equal intervals. The inductive resistances i' i= i act as primaries to the common secondary s which forms part of an intermediate oscillating circuit f which is coupled to the aerial '9. All the circuits should be in resonance with the aerial;

It will be "seen that condenser 0' discharges into condenser which. discharges int'ocondenserc? which is finally discharged through discharger (Z and inductive resistance i The-spacing of the teeth and the speed of" rotation of the disks'should be such that the aerial is impulscd: at each complete period or otherwise in synchro-d nism with it's-natural period of oscillation. I may use a -larger number of hClICllltS than the three shown.

Suitable means such as an air blast it may be provided in each circuit forquenching thedischarge and for preventing the Specification of Letters Patent.

Patented May 15, 1917.

Application fllcdllecemher a1, 1913. Serial R0. was.

condensers from discharging in the Wrong charging, one of said circuits, and 'rheans for actuating said movable terminals whereby the auxiliary circuits are dis charged in sequence, said auxiliary circuits being so arranged that the dlschar'ge of each one but the last, charges a succeed ingone; i t

In a device of the character described, a closed oscillatory circuit; a plurality "of'auxiliary oscillatory circuits connected thereto, "each proi'ided iyith a tionary terminal and a mov'able'ter-miiial consisting ot'a toothed disk; "mean for charging one of said auiiiliaryfcircuits, and means for rotating said disks whereby the auxiliary circuits are" discharged in se quence, said auxiliary circuits being s0 :11:- i-an'ged that the discharge'ofeafc'li one but the last, charges a succeeding" one.

3. In a device ofthe character descrilied;

a closed oscillatory circuit including an inductance which constitutes tlie se'cjdlidary of a transformer, a plurality o' f a'11xi li'ary oscillatory circuits each "includin gfa'n inductance;- all t of s'aid last-mentioned 'insaid auxiliary "circuits. and means for dischalfging said auxiliary circuits in sequence, said au tiliary circuits being so arranged that the discharge of 'eachfoiie but the last,

charges a succeeding one 4. In'a device of the character described; a plu'ralityof oscillatory circuitseach pie 'vided u'ith a stationary terminal and a movable terminal. means for charging one of said, circuits means for actuatii'rg said movable tern'unals whereby the cu'cults'arc "ductance's constituting are; primary of the transformer, me'ansfor charging one of v discharged in sequence. and an. aerial coiiductor oj-ieratively connected" to said eircuits, said circuits being so'arrangled that-5 the discharge of each one but the last,- charges'a succeeding"one.

1 05 5...In a device of the-kind described,- an

oscillatory circuit, a plurality af exciting I circuits connected therewith each commie mg a condenser, means for discharging a condenser in one exciting circuit into a condenser in another exciting circuit and then discharging the condenser in the-lastmentioned circuit and continuing and repeating these' steps in orderly manner for the purpose of maintaining continuous 0scillations in said oscillatory circuit.

6. The combination of'a condenser connectedin series with an inductive resistance, a toothed disk andxa second condenser, a third condenser, a second inductive resistance and a second toothed disk all connected in series with the second condenser,

a third inductive resistance and a third toothed disk both connected in series with the third condensen'means for charging the first condenser, and a rapidly rotating shaft carrying the three disks.

, 7. The combination of a source of continuous current, a key, an inductive'resist ance and a condenser all connected in series, a second condenser, a second indu'ctiveresistance and a toothed disk all connected in series with the first condenser, a third condenser, a third inductive resistance and a second toothed disk all connected in series with "the second condenser, a fourth induct'we resistance and a third toothed disk both connected in series with the third condenser, a rapidly rotating shaft carrying the three disks and a winding adapted to act as secondary to the second,'- third and fourth inductive resistances.

GUGLIELMO MARCONI.

Witnesses: y

-W. L. MoEwEN, J. ST. VINCENT PLETTS. 

